\documentclass{article}
\usepackage{amsmath}
\title{Digital Filters Primer (SAMPLE)}
\author{Novus Examples}
\date{2026-01-15}
\begin{document}
\maketitle
\begin{abstract}
Minimal SAMPLE article with one equation.
\end{abstract}
\section{Introduction}
This is a fictional SAMPLE LaTeX article for editor and TeX-pipeline tests.
See~\cite{filters2026} for the companion BibTeX entry.
\section{Equation}
\begin{equation}
f_s > 2 f_{\max}
\end{equation}
\bibliographystyle{plain}
\bibliography{filters}
\end{document}
